SQL antipateterns. How to avoid traps when working with databases. Karvin B.

SQL language is necessary for working with structured data. Programmers who know their favorite language perfectly (Java, Python or Go) cannot understand everything, and are often not experts in SQL. This leads to the appearance of antipatterns - solutions that at first glance seem correct, but over time they create more and more problems.

learn to identify and bypass many of these common traps! Conduct a refactor of the inherited nightmare and turn it into a viable data model!

Examples of the SQL code are based on the MySQL 8.0 version, but other popular RSUBDs are also mentioned in the text. The code examples use Python 3.9+ or Ruby 2.7+.